MESON Chess Problem Database

Problem Display
PID: 23543 (8/8/8/Rpp5/P1k1K3/Q7/8/8 w - - 0 1)

Asplund, Per Ivan Rune

Tidskrift for Schack, 1958

8/8/8/Rpp5/P1k1K3/Q7/8/8

#2

4 + 3

2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Sets
    • 1...bxa4
      • 2.Rxc5#
    • 1...b4
      • 2.Qd3#
  • Tries
    • 1.Ke3?
      • 1...bxa4
        • 2.Rxc5#
      • 1...b4
        • 2.Qd3#
      • 1...Kd5!
    • 1.Ke5?
      • 1...bxa4
        • 2.Rxc5#
      • 1...b4!
    • 1.Ra6?
      • 1...b4
        • 2.Qd3#
      • 1...bxa4!
    • 1.Ra7?
      • 1...b4
        • 2.Qd3#
      • 1...bxa4!
    • 1.Ra8?
      • 1...b4
        • 2.Qd3#
      • 1...bxa4!
  • Keys
    • 1.Qb2!
      • 1...bxa4
        • 2.Rxa4#
      • 1...b4
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE,XP(B)::R1(D),XP(c)
    • P(b);SBLOCK::QAB1(A)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • P(b);OGATE,XP(B)::R1(D),XP(c)
        • P(b);SBLOCK::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(C);P-FLIGHT
      • Vars
        • P(b);OGATE,XP(B)::R1(D),XP(c)
      • Refutation
        • P(b);
    • Try
      • R(D);
      • Vars
        • P(b);SBLOCK::QAB1(A)
      • Refutation
        • P(b);XP(B)
    • Try
      • R(D);
      • Vars
        • P(b);SBLOCK::QAB1(A)
      • Refutation
        • P(b);XP(B)
    • Try
      • R(D);
      • Vars
        • P(b);SBLOCK::QAB1(A)
      • Refutation
        • P(b);XP(B)
  • Actual
    • Q(A);
    • Vars
      • P(b);OGATE,XP(B)::R(D),XP(b)
      • P(b);SBLOCK::QAR2(A)
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